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Finding the Fourth Proportional to 1,928,948.74, 2,891,612.75 and 648,661.03

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Solution

The fourth proportional to 1,928,948.74, 2,891,612.75 and 648,661.03 is: 972,382.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928,948.74 : 2,891,612.75 = 648,661.03 : x
  2. Step 2: Convert to fraction form
    1,928,948.74/2,891,612.75 = 648,661.03/x
  3. Step 3: Cross multiply
    1,928,948.74x = 2,891,612.75 × 648,661.03
  4. Step 4: Simplify right side
    1,928,948.74x = 1,875,676,494,303.80
  5. Step 5: Solve for x
    x = 1,875,676,494,303.80/1,928,948.74
  6. Step 6: Final answer
    x = 972,382.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.